Salesforce Report Formulas using Lightning Report Builder
3 simple scenario explained.
Scenario 1 :: Just Display Sub Total and Grand Total - gives an idea what and how to pull these values into custom Report Formula Fields.
Scenario 2 :: Displays the Win Rate of deals with each Account.
Scenario 3 :: The Formula Field displays the Revenue generated by each account relative to the overall Revenue.
Along the way explains a briefly the Lightning Report Builder.